Rob Kardashian's low-key birthday celebrations

The 'Keeping Up With The Kardashians' star isn't thought to be doing much to mark his 29th birthday - which was yesterday (17.03.16) - and is just planning to relax with his girlfriend and open the "thoughtful gifts" she bought him.

A source told E! News: "Chyna got him a few thoughtful gifts and she is giving him attention.

"Chyna has an appearance in Los Angeles on Saturday, so I think they are local and laying low."

Meanwhile, Rob's siblings have rushed to social media to wish him a happy birthday.

Taking to her website, Kim Kardashian West shared a collage of pictures of the pair. Writing in a post attached to it, she said: "Robbie: Happy birthday!!! I love you and I hope you have the best birthday ever. I'm so proud of you! (sic)"

And Rob and Blac are reportedly setting their sights on a spin-off reality show.

A source said recently: "Rob and Chyna are hoping for a spin-off. Chyna doesn't want to film with Rob's family. They both think a spin-off is the best business decision. They have had meetings and things look promising."